Scientists say the rain forest is approaching a critical tipping point at which the damage is irreversible.

Armenia has been riven by disputes over its leadership since its military defeat by Azerbaijan last fall. Newly called elections are unlikely to reconcile the divisions in Armenian society caused by …

The United States and South Korea should pursue an expanded nuclear agreement that supports the production of civilian nuclear power and enhances extended deterrence against the North Korean threat. …

El Salvador and the Central African Republic have made Bitcoin legal tender, but market volatility has undermined the experiment.